Denial of service via unbounded dissector recursion
Published Feb 20, 2025 · Updated Mar 27, 2026
Denial of service in Wireshark 4.2.0 through 4.2.10 and 4.4.0 through 4.4.3 allows attackers to crash it via malformed packets. The Bundle Protocol and CBOR dissectors recursively parse attacker-controlled nested structures without a depth limit, exhausting the process stack. A packet can be injected onto the wire, while a crafted capture file requires user interaction; the documented consequence is a process crash.
Summary
What happened
Denial of service in Wireshark 4.2.0 through 4.2.10 and 4.4.0 through 4.4.3 allows attackers to crash it via malformed packets. The Bundle Protocol and CBOR dissectors recursively parse attacker-controlled nested structures without a depth limit, exhausting the process stack. A packet can be injected onto the wire, while a crafted capture file requires user interaction; the documented consequence is a process crash.
The record
- CVE
- CVE-2025-1492
- Published
- Feb 20, 2025
- Updated
- Mar 27, 2026
- Vendor
- Wireshark Foundation
- Product
- Wireshark
- Classifications
- CWE-674, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 20, 2025CVE publishedPublication date reported by the CVE source.
- Mar 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.2.0 <4.2.11
- Affected versionversion=4.4.0 <4.4.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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